information access

This phrase is **compositional** — it is the ordinary English pairing of "access" (the ability to obtain or read) with "information" (the object being accessed), used to describe the permitted operation of reading or observing data without the ability to modify, write, or transmit it back. Access control in this field concerns "the process of granting or denying specific requests to obtain and use information and related information processing services." In the context the user quotes — "allowing information access only" enforced by hardware one-way mechanisms — the phrase simply scopes the permitted operation to read/observe, as distinguished from write or bidirectional flow; it draws its meaning from that contrast, not from any independent definition. The broader field anchors such distinctions within the concept of confidentiality, defined as "preserving authorized restrictions on information access and disclosure." No authoritative source (NIST CSRC glossary, ISO/IEC 27000 series, CNSSI 4009, AICPA, or CIS) defines "information access" as a discrete term of art with its own glossary entry separate from "access" or "access control."